M4 Traffic

Latest M4 Traffic News

0Accidentsnone reported on the M4 that we are aware of1Roadworks activelive on the M4 right now — see details8Plannedscheduled on the M4 — see details

Live M4 traffic data from National Highways · updated 19:07 Mon 24 Aug

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We hope that the traffic news will help you avoid taffic jams and roadwords.

Our traffic news is designed to provide you with taffic news in a clear and informative way.

You can use the filter options below to find the latest traffic news for the M4 jourey you are planning to take.

9 matching items - showing 1-9 of 9 total available news items

  • Hardshoulder closure

    Active nowRoadworksEastbound
    Time now: Monday, 24 August 2026, 19:07

    19:0424 Aug 2026reported 2 min ago

    Location
    M4 eastbound between J17 and J16
    Direction
    Eastbound
    Lanes closed
    Hard shoulder closed
    Reason
    Roadworks
    Schedule
    23:59 Tue 27 Apr 2021 → 18:00 Fri 30 Jul 2027
    Long-term works - HA planned end: 18:00 Fri 30 Jul 2027.
  • M4 eastbound lanes 1 and 2 closed

    PlannedRoadworksEastbound
    Time now: Monday, 24 August 2026, 19:07

    19:0424 Aug 2026reported 2 min ago

    Location
    M4 eastbound between J19 and J18
    Direction
    Eastbound
    Lanes closed
    Lane closures
    Reason
    Construction work
    Schedule
    20:00 Mon 24 Aug → 06:00 Tue 25 Aug

    Forecast - not confirmed

    🚧HA scheduled: 20:00 Mon 24 Aug06:00 Tue 25 Aug starts in about 52 minutes · lasts ~10h 00m
  • M4 eastbound Jct 12 exit slip lane 1 closure

    PlannedRoadworksEastbound Slip road closed
    Time now: Monday, 24 August 2026, 19:07

    19:0424 Aug 2026reported 2 min ago

    Location
    M4 J12 eastbound exit
    Direction
    Eastbound
    Lanes closed
    Slip road closed
    Reason
    Road improvement or upgrading
    Schedule
    20:00 Mon 24 Aug → 06:00 Tue 25 Aug

    Forecast - not confirmed

    🚧HA scheduled: 20:00 Mon 24 Aug06:00 Tue 25 Aug starts in about 52 minutes · lasts ~10h 00m
  • M4 westbound Jct 17 exit and entry slip roads lane closures

    PlannedRoadworksWestbound Slip road closed
    Time now: Monday, 24 August 2026, 19:07

    19:0424 Aug 2026reported 2 min ago

    Location
    M4 J17 westbound exit
    Direction
    Westbound
    Lanes closed
    Slip road closed
    Reason
    Maintenance work
    Schedule
    20:00 Mon 24 Aug → 06:00 Tue 25 Aug

    Forecast - not confirmed

    🚧HA scheduled: 20:00 Mon 24 Aug06:00 Tue 25 Aug starts in about 52 minutes · lasts ~10h 00m
  • M4 eastbound Jct 5 entry slip road lane closures

    PlannedRoadworksEastbound Slip road closed
    Time now: Monday, 24 August 2026, 19:07

    19:0424 Aug 2026reported 2 min ago

    Location
    M4 J5 eastbound access
    Direction
    Eastbound
    Lanes closed
    Slip road closed
    Reason
    Roadworks
    Schedule
    20:00 Mon 24 Aug → 06:00 Tue 25 Aug

    Forecast - not confirmed

    🚧HA scheduled: 20:00 Mon 24 Aug06:00 Tue 25 Aug starts in about 52 minutes · lasts ~10h 00m
  • M4 eastbound lanes 1 and 2 closed

    PlannedRoadworksEastbound
    Time now: Monday, 24 August 2026, 19:07

    19:0424 Aug 2026reported 2 min ago

    Location
    M4 eastbound between J19 and J18
    Direction
    Eastbound
    Lanes closed
    Lane closures
    Reason
    Construction work
    Schedule
    20:00 Mon 24 Aug → 06:00 Tue 25 Aug

    Forecast - not confirmed

    🚧HA scheduled: 20:00 Mon 24 Aug06:00 Tue 25 Aug starts in about 52 minutes · lasts ~10h 00m
  • M4 both directions Jct 15 to 22 - mobile lane closure

    PlannedRoadworksBoth directions
    Time now: Monday, 24 August 2026, 19:07

    19:0424 Aug 2026reported 2 min ago

    Location
    M4 eastbound between J18 and J17
    Direction
    Both directions
    Lanes closed
    Lane closures
    Reason
    Maintenance work
    Schedule
    20:00 Mon 24 Aug → 06:00 Tue 25 Aug

    Forecast - not confirmed

    🚧HA scheduled: 20:00 Mon 24 Aug06:00 Tue 25 Aug starts in about 52 minutes · lasts ~10h 00m
  • M4 jct 19 to 15 Eastbound 181/0b to 124/0b lane 3 closure

    PlannedRoadworksEastbound
    Time now: Monday, 24 August 2026, 19:07

    19:0424 Aug 2026reported 2 min ago

    Location
    M4 eastbound between J17 and J16
    Direction
    Eastbound
    Lanes closed
    Lane closures
    Reason
    Maintenance work
    Schedule
    20:00 Mon 24 Aug → 06:00 Tue 25 Aug

    Forecast - not confirmed

    🚧HA scheduled: 20:00 Mon 24 Aug06:00 Tue 25 Aug starts in about 52 minutes · lasts ~10h 00m
  • M4 eastbound lane 4 and 3 closure (59/3 to 53/7)

    PlannedRoadworksEastbound
    Time now: Monday, 24 August 2026, 19:07

    19:0424 Aug 2026reported 2 min ago

    Location
    M4 eastbound within J10 after A329(M) westbound access
    Direction
    Eastbound
    Lanes closed
    Lane closures
    Reason
    Maintenance work
    Schedule
    20:30 Mon 24 Aug → 06:00 Tue 25 Aug

    Forecast - not confirmed

    🚧HA scheduled: 20:30 Mon 24 Aug06:00 Tue 25 Aug starts in about 1 hours · lasts ~9h 30m
  • Updated 19:07 Mon 24 Aug

    Powered by National Highways’ Transport Data Feeds.

    How to find the latest M4 traffic news

    Our live M4 feed updates throughout the day with the latest reports on delays, roadworks, accidents, closures and congestion along the M4 motorway. Search by junction number and direction — eastbound or westbound — to focus on the stretch you’re travelling, whether that’s the M25 interchange at Junction 4b, the Severn crossing, the M5 at Almondsbury, or the run into Cardiff and Swansea. A quick check before you leave can save you sitting in avoidable traffic.

    Why M4 traffic news changes along the motorway

    The Department for Transport counts M4 traffic hour by hour and end to end. What it shows is that the latest M4 news means something different depending on where you are joining the motorway today.

    156,491

    M4 vehicles a day

    at the busiest point, junction 4 by Heathrow — the London commuter end of the M4, where 81% of the traffic is cars.

    128,594

    a day at Bristol

    on the M4 at the M4/M5 interchange — fewer vehicles, but 11,167 lorries and 24,926 vans. The same motorway, carrying a very different kind of traffic.

    32%

    the M4 rush-hour swing

    between the busiest M4 hour (7am) and the quietest (11am) at junction 4. The M4 has a genuine peak, so timing your journey actually helps here.

    81

    M4 count points

    measure this motorway from London to South Wales. It is one of the most closely watched roads in the country, and every M4 accident, delay and roadworks report we publish comes from that network.

    So an M4 delay at junction 4 and an M4 delay at junction 19 are not the same problem. That is why this page carries all the latest M4 traffic news together — accidents, crashes, roadworks and lane closures — so you can find the ones on your stretch of the M4 motorway today rather than reading about somebody else’s.

    Hourly figures are from the Department for Transport’s own M4 count point beside junction 4, counted on 3 September 2025, published 20 May 2026. Daily figures are Average Annual Daily Flow for 2025.

    M4traffic.co.uk is dedicated to the latest M4 news updated every few minutes, 24 hours a day 7 days a week, 365 days of the year. More features coming. See www.trafficnewsengland.co.uk for ALL ENGLAND traffic news and M25Traffic.co.uk for M25 dedicated news.